LED lighting fixture with reconfigurable light distribution pattern

Abstract

A lighting fixture utilizing light emitting diodes and easily reconfigurable lenses to provide customizable lighting patterns to more efficiently illuminate work or storage areas.

What is claimed is: 
     
       1. A light emitting diode lighting fixture comprising:
 an elongated fixture base having a trough including an inwardly oriented flange; 
 a printed circuit board mounted in the fixture base; 
 a plurality of light emitting diodes linearly mounted on the printed circuit board; and 
 a plurality of bezels, each bezel having a plurality of lenses, a single lens for each light emitting diode, the inwardly oriented flange configured to slidably and removably engage the plurality of bezels mounted to said base by the inwardly oriented flange, wherein the printed circuit board is disposed between the fixture base and the bezel 
 wherein the plurality of lenses are chosen from a plurality of lens types to direct light into light output pattern characterized by a specific illumination footprint, and wherein the light output pattern is reconfigurable by exchanging at least one of the plurality of lenses with a lens of another type individually. 
 
     
     
       2. The LED lighting fixture of  claim 1 , wherein the lens wherein the lens types comprise a round lens, a cat-eye lens, a bilateral lens, and a composite lens comprising portions of at least two of a round lens, a cat-eye lens, or a bilateral lens. 
     
     
       3. The LED lighting fixture of  claim 1 , wherein the illumination footprint directs light to areas of desired illumination while not directing light to areas not of desired illumination. 
     
     
       4. The LED lighting fixture of  claim 1  wherein the fixture base includes a bezel flange to retain the bezel. 
     
     
       5. The LED lighting fixture of  claim 1  wherein the fixture base includes a mounting flange. 
     
     
       6. The LED lighting fixture of  claim 1  wherein fixture base includes a fastener receiver. 
     
     
       7. The LED lighting fixture of  claim 1  wherein the light emitting diodes are powered by direct current electricity controlled through an interactive system. 
     
     
       8. A method of configuring an LED lighting fixture having an elongated fixture base having a trough including an inwardly oriented flange, a printed circuit board with a plurality of light emitting diodes, the printed circuit board mounted between the base and a plurality of bezels mounted to the base by the inwardly oriented flange, each bezel having a plurality of lenses, each lens aligned with one of the plurality of light emitting diodes, and the inwardly oriented flange configured to slidably and removably engage the plurality of bezels, the method comprising:
 providing a single lens for each LED, each lens chosen to contribute to an illumination footprint for the fixture. 
 
     
     
       9. The method of  claim 8 , and further comprising:
 determining an illumination footprint for the LED lighting fixture; and 
 inserting lenses into the bezel to direct light to form the determined illumination footprint. 
 
     
     
       10. The method of  claim 8 , and further comprising:
 reconfiguring the lenses to alter the illumination footprint. 
 
     
     
       11. A light emitting diode (LED) lighting system, comprising:
 a plurality of LED lighting fixtures, each of the plurality of LED lighting fixtures individually configurable to provide lighting having a particular illumination footprint corresponding to a portion of a specific space, the plurality of LED lighting fixtures having a combined illumination footprint for the whole of the specific space; and 
 wherein each of the plurality of LED lighting fixtures comprises:
 a fixture base having an inwardly oriented flange; 
 a printed circuit board including;
 a light emitting diode mounted to the printed circuit board, the printed circuit board mounted to the fixture base to sink heat from the light emitting diode through the fixture base; and 
 a bezel mounted to said base by the inwardly oriented flange, wherein the printed circuit board is disposed between the fixture base and the bezel, the bezel including a single lens disposed in relation to each said light emitting diode to provide a light output pattern characterized by its particular illumination footprint, the inwardly oriented flange configured to slidably and removably engage the bezel. 
 
 
 
     
     
       12. The LED lighting system of  claim 11 , wherein the bezel includes a plurality of single lenses, each single lens mounted in a bezel opening, the lens type chosen to contribute to the specific illumination footprint. 
     
     
       13. The LED lighting system of  claim 12 , wherein each LED lighting fixture includes multiple bezels to produce multiple light output patterns resulting in its particular illumination footprint. 
     
     
       14. The LED lighting system of  claim 11 , wherein each single lens comprises one of a round lens, a cat-eye lens, a bilateral lens, or a composite lens comprising portions of at least two of a round lens, a cat-eye lens, or a bilateral lens. 
     
     
       15. The LED lighting system of  claim 11 , wherein the particular illumination footprint directs light to areas of desired illumination while not directing light to areas not of desired illumination. 
     
     
       16. The LED lighting system of  claim 11 , wherein the combined illumination footprint directs light to areas of desired illumination while not directing light to areas not of desired illumination. 
     
     
       17. The LED lighting system of  claim 11 , wherein each fixture base is elongated, and wherein each fixture base includes a plurality of LEDs linearly mounted on the printed circuit board. 
     
     
       18. The LED lighting system of  claim 11 , wherein the LEDs are powered by direct current electricity controlled through an interactive system.